U01A6

Lost Communication With Hybrid/EV Battery Interface Control Module G

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
The car goes into emergency mode
Reduced power or inability to use electric mode
Errors in the hybrid/electric powertrain system
Inability to charge the battery

Causes

Open or short circuit in the CAN bus
Poor contact in battery control module connectors
Battery management module malfunction
Problems with module power supply (blown fuse)
Software error in control module

How to Fix

Check the integrity of the CAN bus and connections
Inspect the battery control module connectors for corrosion or damage.
Check fuses associated with the module
Scan the module for additional errors
If necessary, replace or reflash the battery management module
Repair only from an authorized dealer

Related codes

U01A5 U01A7 U0100